Motor operated kinesitherapy device



Dec. 15, 1959 0. K. MURPHY MOTOR OPERATED KINESITHERAPY DEVICE 4 Sheets-Sheet 1 Filed July 20, 1956 INVENTOR.

Dec. 15, 1959 0. K. MURPHY 2,917,043

MOTOR OPERATED KINESITHERAPY DEVICE Filed July 20, 1956 4 Sheets-Sheet 2 INV EN TOR.

. I BY l rngys.

Dec. 15, 1959 0. K. MURPHY 2,917,043

MOTOR OPERATED KINESITHERAPY DEVICE Filed July 20, 1956 4 Sheets-Sheet 5 Dec. 15, 1959 0. K. MURPHY MOTOR OPERATED KINESITHERAPY DEVICE Filed July 20, 1956 4 Sheets-Sheet 4 AZwfa/m/z.

United States Patent MOTOR OPERATED KINESITHERAPY DEVICE Owen K. Murphy, Adamsville, Pa.

Application July 20, 1956, Serial No. 599,172

22 Claims. (Cl. 128--33) This invention relates to a motor operated kinesitherapy device and more particularly to a simple and durable device having generally the form of a pad, cushion, mattress or mattress pad equipped with one or more motorized applicators and an internal structure for transmitting gyratory motion generated by the applicator or applicators throughout substantially the entire area of the pad, cushion, mattress or mattress pad so as to impart said motion to a human body resting upon or against the cushion, pad, mattress or mattress pad.

One example of the invention is in the form of a large mattress pad suitable for use by adults and equipped with a pair of motorized applicators and a lattice-like flexible structure for transmitting gyratory motion generated by the applicators throughout substantially the entire area of the mattress pad so as to impart such motion to a human body resting on the mattress pad.

Another example of the invention is in the form of two pads or cushions hinged together and adapted to be mounted against the seat and back of a chair, each pad or cushion being equipped with a motorized applicator for transmitting gyratory motion generated by the applicator throughout substantially the entire area of each pad or cushion so as to impart such motion to the body of a person seated in the chair.

This application is a continuation in part of the motor driven kinesitherapy devices described and claimed in my oopending applications Serial No. 450,387, filed August 17, 1954 and now Patent Number 2,833,276, and Serial No. 508,203, filed May 13, 1955 and now abandoned.

One of the principal objects of the present invention is to provide such a pad, cushion, mattress or mattress pad served by two motor driven applicators which jointly contribute to the gyratory action imparted to the body of the user and wherein the two motors can be adjusted to run at slightly different speeds thereby to generate an intermediate frequency equal to the difference between the motor speeds and which produces a slow, soothing rolling or rubbing action in the pad, cushion, mattress or mattress pad as imparted to the body of the user.

Another object is to provide such a motion-transfer device which is in the form of a thin flexible body so as not to interfere with the yielding of the mattress to conform to the body of the person lying upon the same.

Another object of the present invention is to provide a simple and effective sectionalized motion transfer structure for transmitting motion from a pair of eccentrically weighted motor driven applicators to a pad, cushion, mattress or mattress pad. 1

Another object is to provide such a device in which the motorized applicators are mounted at one extremity of the mattress or pad so as to be readily accessible for electrical connections and repair and also so that they can readily be cooled by air drawn through the motor casing.

Another object is to provide such a motor transfer device which transmits the motion from such a pair of ice motor driven applicators at the edge of a mattress or mattress pad uniformly. over substantially the entire area thereof.

Another object of the present invention is to provide a simple housing for an eccentrically weighted motor or motors and which also provides the connection between the eccentrically weighted motor and a flexible motion transmitting structure contained within the body of the pad, cushion, mattress or mattress pad and which transmits the motion of the motor or motors to the body of a person resting on or against the pad.

Another object of the invention is to provide such a housing for an eccentrically weighted motor or motors which can be arranged at one end of the pad, cushion, mattress or mattress pad and can extend the full width thereof to transmit effectively the motion of the eccentrically weighted motor or motors to the full area of the motion transmitting structure contained within the pad.

Another object of the invention is to provide such a housing for an eccentrically weighted motor or motors in which the opposite ends can be sealed by end bells or head which are attractive in appearance, serve to maintain the desired cylindrical shape of the housing throughout its length, and are also provided with openings so that cooling air can readily be drawn through the casing to prevent overheating of the motor or motors.

Another object of the invention is to provide such a housing for the eccentrically weighted motor or motors which is externally padded and covered in the same manner as the body of the pad, cushion, mattress or mattress pad itself and in which the cover or padding for the motor housing is held in place by clamping bars which also form the anchorage for the adjacent edges of the cover for the body of the pad, cushion, mattress or mattress pad.

Another object is to provide a pad, cushion, mattress or mattress pad served by two eccentrically weighted motors in which a pronounced action at the intermediate gyratory frequency of the two. motors can be obtained. It has been found that by arranging the motors with their axes at an angle to each other, particularly at right angles to each other, and by driving one motor at a slightly different speed as compared with the other motor, a very pronounced action is obtained at the 'inter mediate frequencies of the two motors which imparts a relatively slow rolling or rubbing action having a soothing and pleasing effect. 1

Another object of the invention is to provide such a device which can readily be applied to the seat and back of a chair, such as a barber chair, the device being made in the form of two separate pads or cushions hinged together for this purpose and each of the pads or cushions being provided with an individual motor driven applicator.

Another object of the invention is to provide such a device made of two hinged pads which can be quickly and reliably attached to a chair, such as a barber chair, so as to be readily used or removed in accordance with the requirements of the customer.

Another object is to provide such a device for barber being lying thereon.

device which will operate without change of characteristics for a long period of .time and which has both a pleasing and therapeutic effect.

Another object is to provide such a device which is composed of simple and low cost parts that can readily be put together.

Other objects and advantages of the invention will appear from the following description and drawings in which:

Fig. 1 is a perspective view of a mattress pad made in accordance with the present invention and particularly designed for use in supporting an adult human being lying thereon.

Fig. 2 is a top plan view of the pair of motor driven applicators together with the sectionalized structure through which gyratory motion generated by the pair of motor driven applicators is transmitted throughout substantially the entire area of the mattress pad shown in Fig. 1.

Fig. 3 is a fragmentary enlarged vertical longitudinal section through one end of the mattress pad shown in Fig. 1, this section being taken generally on line 33, Fig. 2.

'Fig'. 4 is a fragmentary horizontal section through the mattress pad shown in Fig. l and taken generally on line 44, Fig. 3, this view being on an enlarged scale as compared w th Figs. 1 and 2 and on a reduced scale as compared with Fig. 3.

Fig. 5 is a perspective view of a modified form of the invention and showing the invention embodied in the form of a'pair of hinged cushions or pads adapted to be respectively arranged on the seat and against the back of a chair or the like and each provided with a motor driven applicator and an internal motion transmitting structure.

Fig. 6 is a slightly enlarged view of the internal hinged motion transmitting structures for the seat and back cushions shown in Fig. 5 and of the motor driven applicators secured thereto.

Fig. 7 is an enlarged fragmentary horizontal section taken generally on line 77, Fig. 5 and particularly illustrating the mounting for the motor driven applicator for the seat cushion.

Fig. 8 is an enlarged fragmentary vertical section taken generally on line 88, Fig. 5.

Fig. 9 is an enlarged horizontal section taken generally on line 9-9, Fig. 5 and particularly illustrating the mounting of the motor driven applicator for the back cushion.

Fig. 10 is a wiring diagram for the electrical components used in the modified form of the invention illustrated in Figs. 5-9.

The form of the invention shown in Figs. 1-4 illustrates an embodiment in a mattress pad of sufficient length to support the body and legs of an adult human The mattress pad can be placed upon a mattress (not shown) and a feature of the invention resides in the mattress pad readily conforming to the contour of the person lying thereon so as to support all parts of the body uniformly without undesirable zones of high pressure support.

A feature of all forms of the invention resides in the provision'of two motorized applicators, indicated generally at 5*, and secured to the edge of the mattress pad 8 at one end thereof as best shown in Fig. 1. Each of these motor driven applicators 9 includes an electrical motor 10 having a generally cylindrical casing 11 and a motor shaft 12. A fan 13 is mounted on each end of the motor shaft 12, the blades of these fans being shaped to move the air longitudinally through the casing 11 of the electric motor for the purpose of cooling the same. Each fan-13 includes a hub 14 from which its blades 15 radiate, and screwed into each of the fan hubs is a screw itj'which projects-radially and hasa head 17 at its outer end. One or more weights 18 are carried by each of the screws 16, these Weights being preferably of washer-like form and held against the corresponding screw head 17 by a locknut 19. The screws 16 at each end of each motor are arranged substantially in the same plane and project in substantially the same direction and it will therefore be seen that these screws 16 and their weights 18 are cumulative in providing an eccentric weight on the motor shaft 12 which tends to gyrate the motor shaft and the motor as a function of its operation.

A pair of spaced rubber rings 20 severally surround the opposite ends of each motor casing 11. The rubber rings are preferably cemented to the motor casing and provide a resilient radial extension thereof. The rubber rings 24} are compressed within a cylindrical metal shell or loop means 21 which is composed of two bell shaped halves 21a and 21b arranged in edge-to-edge relation with each other and held in this relation by the rubber rings 20 and the motor casing 11. Each of the halves has an end head 22 provided with holes 23 of sufiicient size and number to allow the fan blades 13 to draw an adequate amount of cooling air axially through the shell 21 and the motor contained therein, and also through a rheostat 24 housed in one end of the shell 21 and worked by a knob 25 projecting from the corresponding end wall 22.

An important feature of the invention, illustrated in Figs. 14, resides in the provision of a particular form of core member or lattice structure 26 to transmit the gyratory action of the two motor shells 21 throughout the mattress pad from one end edge of the mattress pad. It is important that this core member be of substantial area to transmit the action of the motors throughout a major part of the area of the mattress pad. This core member 26 is also sectionalized to have two major branches or separate parts each of which is acted upon by a corresponding one of the motor driven applicators 9. It is also essential that both sections of this core or motion transmitting structure be highly flexible in a direction transverse of this major area so as to conform freely to the body of the person lying upon the mattress pad. It is also essential that this core or motion transmitting structure be relatively rigid in a plane parallel with the major faces of the mattress pad in order that the gyratory action of the motor driven applicators be effectively transmitted through the motion transmitting structure to the far end of the mattress pad. It is also desirable that this core member pass around the motor shell 21 in compressive relation to this shell.

The flexible motion transmitting core structure 26 includes parallel longitudinal flexible metal straps or strips 28, six being shown and being arranged in the form of two groups of three each and these groups forming two side groups or sections 26a and 26b at each side of the motion transmitting core structure. At one end all of the longitudinal strips or straps 28 are connected by a pair of full width flexible transverse or cross strips or straps 29 which are arranged in closely spaced relation to each other with one arranged close to the corresponding extremities of the longitudinal strips or straps 28. The full width cross strips or straps 29 are each secured to each of the longitudinal strips or straps 28 as by spotweldings 30 at the crossovers of these strips or straps as shown in Fig. 4. The three longitudinal strips or straps 28 forming each side group or branch of the core structure are additionally cross connected by transverse or cross strips or straps 31 which are arranged at spaced intervals along the longitudinal straps or strips 28 and each of which is connected to its companion three longitudinal strips or straps 28 by spotweldings 32 as best shown in Fig. 4. It will therefore be seen that the cross strips or straps 31 provide a unitary structure at one end of the motion transmitting structure and that the balance 5. of the motion transmitting core structure is, in effect, two branches or sections 26:: and 26b extending from this unitary end. It will be seen that such a structure is highly flexible in a direction transverse of the common plane of the longitudinal strips or straps 28 and cross strips or straps 29, 31 but is rigid in a direction parallel to this common plane.

The two motor driven actuators 9 are secured to the end of the motion transmitting core structure 26 having the full length cross strips or straps 29 and each motor is secured to this motion transmitting core structure so as to be in line with and to extend transversely of a corresponding end of section 26a, 26b of this motion transmitting core structure. The shell 21 of each motor driven actuator 9 is secured to the metal motion transmitting structure by a pair of spaced straps 35. Each of these straps includes a cylindrical portion 36 the ends of which abut against each other, as indicated at 38, and thence are continued to form outwardly diverging flange portions 39. These flange portions 39, as best shown in Fig. 3, extend in a generally lateral direction to embrace the endmost full length cross strip or strap 29 as well as the end of a corresponding longitudinal strip or strap 28.

Each pair of flange portions 39 can be secured to these metal strips or straps 28, 29 by clamping plates or bars iii, a plurality of clamping bolts 41 extending through each pair of clamping bars with the endmost of these bolts 41 also extending through the flange portions 39 so that the ends of these flange portions 39 are brought into tight frictional engagement with the endmost full length cross strip or strap 29 and also the corresponding longitudinal strip or strap 28 of the core structure.

In order to insert the shell 21 of each motor driven applicator 9, the flange portions 39 of each cylindrical strap 35 are spread apart and the shell 21 inserted. Following this the clamping plates 40 are applied to opposite sides of the two pairs of flange portions 39 and these clamping plates are drawn together by the clamping bolts 41. These clamping bolts serve to contract the cylindrical parts 36 tightly about each shell 21.

The longitudinal strips or straps 28 and cross strips or straps 29, 31 of the motion transmitting structure 26 are sandwiched between a pair of sponge rubber pads 45 which can be adhesively secured to each other and to the faces of the several metal straps 28, 29 and 31. These rubber pads can be enclosed in a suitable cover 46, preferably of natural or synthetic leather.

The shell 21 of each motor driven applicator 9 can also be covered and for this purpose can be covered with a piece of cloth 48, this in turn being embraced by a rectangular rubber pad 49 and a cover 50. The opposite ends 51 of this cover 50 can be secured to the main cover 46 in any suitable manner, as by the stitching 52 and these ends 51 are shown as being continued to extend between the corresponding clamping plates 40 and the flange portions 39 of the cylindrical clamping straps 35. The circular edges of the cover 50 can be headed as indicated at 53.

The mattress pad shown in Figs. 1-4 is particularly useful for supporting at full length the full body and legs of an adult and for this purpose is provided with the two motor driven applicators 9 each associated with a corresponding longitudinal side branch or section 26a, 26b of the motion transmitting structure. In operation, the gyratory motion of the eccentric weights 18 gyrates each motor housing 11 and this gyratory motion is in turn transmitted through the rubber rings 20 to the sections 21a and 21b of the corresponding shell 21. From each shell 21 this motion is transmitted through the cylindrical parts 36 and end flange portions 39 of each pair of clamping straps 35 and since these flange portions 39 are clamped to the motion transmitting structure composed of the longitudinal and transverse flexible metal strips or straps28, 29 and 31, these straps are gyrated in a direction transversely of their common plane. This transverse gyratory movement of the strips or straps 28, 29 and 31 is transmitted through the rubber pads 45 to the body ofthe person lying upon or on the pad or mattress. The action of the left hand motor driven applicator 9 as viewed in Fig. 2 is primarily eflfective against the left hand branch or section 26a of the motion transmitting structure 26 while the action of the right hand motor driven applicator 9 is primarily effective upon the right hand branch or section 26b of this motion transmitting structure. By the provision of two motors and by so sectionalizing the flexible motion transmitting structure it has been found that each motor driven applicator 9 is fully effective at the opposite extremity of the mattress pad.

1 It will be noted that the motor 10 is disposed within the shell 21 in fully spaced relation to the walls of this shell and has a relatively stationary part or housing 11 and a rotary part or shaft 12 and that this rotary part 12 has a predetermined mechanical rotary unbalance as produced by the weights 18 of substantial amount well in excess of any accidental unbalance due to inaccuracy in manufacture. It will further be noted that a plurality of soft, resilient cushion members 20 are provided in axially spaced relation around the stationary part 11 of the motors and are interposed under stress between the stationary part 11 of the motor and the wall of the shell 21 to serve as the sole and floating support between the motor it? and shell 21 whereby rotation of the unbalance rotary part 12 of the motor will cause a gyratory body movement of the motor 10 in a relatively small closed loop path which is transmitted through the cushion members 20 to the shell 21. a

It will further be noted that the movement so transmitted to the shell is severally transmitted. to the several sections of the motion transmitting structure 26 which structure is relatively flexible in a direction transverse of the plane of its major faces, that is, transversely of its broad and long dimensions but is relatively rigid or inflexible in a direction parallel with this plane of its major faces, that is, a plane parallel to its broad and long dimensions.

It will also be noted that the drive shafts 12 of the motors are arranged parallel to this plane so that the eccentricity of the weights 18 serves to create a transverse gyration or undulation of the entire motion transmitting structure thereby to impart gyratory massage action to the body of a person lying on the mattress pad.

In Figs. 5-10, the invention is shown as embodying a pair of thin pads or cushions adapted to be attached to a chair, so that one pad rests on the seat of the chair and the other pad is attached to the back of the chair. The seat pad or cushion is indicated at and the back pad or cushion is indicated at 61. Each is acted upon by an eccentrically weighted motor 10, these motors being identical to the motors 10 of the form of the invention shown in Figs. 14 and the same reference numetals have therefore been applied and the description is not repeated. Also as with the form of the invention shown in Figs. 1-4, a pair of spaced rubber rings 20 severally surround the opposite ends of each motor casing 11. These rubber rings are preferably cemented to the motor casing and provide a resilient radial extension thereof. These rubber rings are maintained under compression and form the sole and floating support for each eccentrically weighted motor 14 as hereinafter described.

Referring particularly to the seat cushion 60, the numeral 63 represents a sheet of metal having its central part formed to provide a split tubular housing or loop means 64 for the corresponding eccentrically weighted motor 1:). Flanges 65 project radially outwardly from the mating edges of the split cylindrical motor housing 64. Cup-shaped cylindrical shells 66 are inserted into the opposite ends of the split cylindricalmotor housing 64, each of these cup-shaped cylindrical shells including an end wall having perforations 68 so that air can be drawn through the perforations 68 at one end of the split tubular housing 64 by the fan 13 and discharged through the perforations 68 in the shell 66 at the opposite end of the split cylindrical housing 64. The end shells 66 also provide attractive enclosures for the split cylindrical motor housing 64 and can be highly polished for this purpose. In addition, one of the perforations 68 of one end shell 66 can carry a rubber protector bushing 69 for the lead-in cable 70 which is composed of the lines 71, 72 (Fig. and the side wall of this shell can be provided with a similar rubber bushing 69 through which the cable 73 carrying the lines 71, 72 and 74 leading to the two motors 10 can extend.

The seat pad or cushion 60 includes a motion transmitting core member or lattice structure 75 for transmitting gyratory action from the eccentrically weighted motor 10 throughout the seat pad 60. It is important that this core member be of substantial area to transmit the action of the motor throughout a large part of the area of the seat pad. It is also desirable that this core member be manually flexible in a direction transversely to the major area of the core member so as to conform freely to the body of a person seated on the seat pad. It is also desirable that this core or motion transmitting structure be relatively rigid in a plane parallel with the major faces of the seat pad in order that the gyratory action of the eccentrically weighted motor 10 be effectively transmitted by the core or lattice structure to the far extremities of the seat pad.

The flexible motion transmitting core structure 75 of the seat pad 60 includes fore-and-aft flexible metal straps or strips 76, four being shown. This motion transmitting structure also includes metal cross straps or strips 78, three being shown. The fore-and-aft metal straps 76 are arranged in face-to-face relation with the metal cross straps 78 and at each crossover these straps 76, 78 are joined by spot Welds 79.

One of the flanges 65 of the split cylindrical motor housing 64 is preferably welded at spaced intervals, as indicated at 80, to the front cross strap or strip 78. The other flange 65 of the split cylindrical motor housing 64 is arranged on the opposite side of this front cross strap or strip 78. The two flanges 65 of the split cylindrical motor housing 64 are adaped to be drawn together by fastening members in the form of bolts 81, extending through bolt holes in these flanges 65 and in the front cross straps 78 of the lattice structure. As hereinafter described, the bolts 81 draw the cylindrical body of the split tubular motor housing 64 into compressive relation with the rubber rings 20 of the eccentrically weighted motors 10 housed therein and also into compressive relationship with the cup-shaped end shells 66 so as to hold these end shells in position at the opposite ends of the split cylindrical housing 64.

The rear cross strip or strap of the motion transmitting lattice structure 75 of the seat pad 60 is in the form of one leaf 82 of a piano hinge 83, this hinge leaf having a plurality of spaced tubular coaxial knuckles 84 for this purpose. These knuckles mate with similar tubular spaced knuckles 85 of a piano hinge leaf 86 which forms the lower cross strip or strap of the motion transmitting lattice structure 88 of the back pad or cushion 61. The piano hinge leaves 82 and 36 are connected by a pintle 89 in the form of a long rod threading through all of the hinge knuckles 84 and 85.

The motion transmitting lattice structure 88 includes metal cross straps or strips 90. These cross straps 90 and the hinge leaf 86 are connected by vertical strips or straps 91, four of such'vertical straps or strips being shown. The vertical strips or straps 91 are arranged in face-to-face relation with the cross strips or straps 90 and the hinge leaf 86 and at their crossovers are secured to the cross strips 90 and hinge leaf 86 by spot welds 92.

One of the eccentrically weighted motors 10 is secured to one side of themotion transmitting lattice structure 88 of the back cushion 61 near the upper end thereof with its axis vertically disposed and hence perpendicular to the axis of the eccentrically weighted motor 10 which serves the seat cushion 60 and which is horizontally disposed. The rubber rings 20 of the eccentrically weighted motor 10 serving the back cushion are compressed within a cylindrical metal shell or loop means 95 which is composed of two bell-shaped halves 95a and 95b arranged in edge-to-edge relation with each other and held in this relation by the rubber rings 20 and motor casing 11 housed therein. Each of the halves has an end head 96 provided with holes 98 of sufiicient size and number to allow the fan blades 13 to draw an adequate amount of cooling air axially through the shell 95 and the motor contained therein.

The shell 95 of the eccentrically weighted motor 10 serving the back cushion 61 is secured to the metal motion transmitting structure 88 by a pair of spaced straps 99. Each of these straps embraces a corresponding end of the motor casing 11 and has its opposite ends extended to form flange portions 101 which are in face-to-face relation with each other. These flange portions 101 extend in a generally horizontal direction to embrace the corresponding vertical side strap or strip 91 and are secured to opposite sides of the motion transmitting lattice structure 88 by spot Welds 102. The ends of the flange portions 101 adjacent the cylindrical shell 95 are shown as drawn together by clamping bolts 103, these bolts serving to draw the cylindrical portions of the strips 99 into compressive relation with the shell 95 and thereby transmit the motion of the corresponding eccentrically weighted motor 10 from the shell to the motion transmitting lattice structure 88 of the back cushion 61.

The vertical straps 91 and cross straps 90 and hinge leaf 86 forming the motion transmitting lattice structure 88 of the back cushion 61 are sandwiched between a pair of soft, resilient pads 104. These pads can be made of sponge rubber and can be adhesively secured to each other and to these metal straps. Similarly, the fore-andaft straps 76 and cross straps 78 and hinge leaf 82 forming the motion transmitting lattice structure 75 of the seat cushion '60 are sandwiched between a pair of soft, resilient pads 104. These pads can also be made of sponge rubber and can be adhesively secured to each other and to these metal straps of the seat cushion. In addition the rear end of the seat cushion rubber pads 104 and the lower end of each of the back cushion rubber pads 104' are preferably beveled at about a 45 angle so as to permit the back cushion to be swung, about the axis of the piano hinge 83, to a 90 position with reference to the seat cushion without undue compression of the rubber cushions.

A rectangular pad or layer 105 of sponge rubber or other soft, resilient material covers the split cylindrical housing 63 for the seat cushion 60, the longitudinal edges of this layer 105 abutting the flanges 65 of this split cylindrical housing as best shown in Fig. 8. A rectangu-.. lar sheet 106 of cover material, preferably natural or synthetic leather, covers this layer 105 of rubber. The longitudinal edges of this cover sheet 106 extend along the outer faces of the flanges 65 of the cylindrical metal housing 63 and are penetrated by the row of bolts 81, as best shown in Fig. 8. For appearance, and to conceal the ends of the layer 105 of sponge rubber, the corresponding cylindrical ends of the cover 106 extend beyond this sponge rubber layer 105 and are beaded as indicated at 108 The cover layer 106 is drawn into compressive relation with the sponge rubber layer 105 by a pair of metal clamping bars 109 which are arranged on opposite sides of the clamping flanges 65 of the split cylindrical housing 63 and are drawn together by the bolts 81, the heads of these bolts engaging one of these clamping bars and nuts 110 on these bolts engaging the other clamping bar, all as illustrated in Fig. 8. These clamping bars have base portions 111 which engage the ends of the leather cover 166 which overlay the flanges 65 and there by serve to draw these ends of the cover 106 together upon tightening the bolts 81 and hence draw this cover into compressive relation with the sponge rubber layer 105. These clamping bars 169 also have outward extensions which terminate in inwardly facing channels or grooves 112, these channels 112 extending the greater part of the width of the seat cushion 60 and serving to retain the cover for the seat cushion 66 in position as hereinafter described. I

In a generally similar manner, the two-part cylindrical shell 95 for the motor serving the back cushion is covered by a rectangular layer or pad 115 of sponge rubber or similar soft, resilient material, the longitudinal edges of this layer abutting each other and the ears 101 of the clamping straps 99, as best shown in Fig. 9.

A rectangular sheet 116 of cover material, again preferably of natural or synthetic leather, covers this layer or pad 115 of rubber. The longitudinal edges of this cover sheet 116 extend in face-to-face relation to each other and to the flange portions 101 of the clamping straps 99 and are penetrated by the bolts 103, as best shown in Fig. 9. For appearance, and to conceal the ends of the layer 115 of sponge rubber, the cylindrical ends of the cover 116 extend beyond this sponge rubber layer 115 and are beaded as indicated at 113.

The cover layer 116 is drawn into compressive relation with the sponge rubber layer 115 by a pair of metal clamping plates or bars 119 which are arranged on opposite sides of the flange portions 101 of the clamping straps 99 and are drawn together by the bolts 103, the heads of these bolts engaging one of these clamping bars and the nuts 120 on these bolts engaging the other clamping bar, all as illustrated in Fig. 9. These clamping bars have base portions 121 which engage the overlaying ends of the leather cover 116 and thereby serve to draw these ends of the cover 116 together upon tightening the bolts 103 and hence draw this cover into compressive relation with the sponge rubber layer 115. These clamping bars 119 also have lateral extensions which terminate in inwardly facing channels or grooves 122, these channels 122 serving to retain the cover for the back cushion 61 in position as hereinafter described.

The covers for the seat and back cushion comprise a back panel 125, preferably of natural or synthetic leather, which extends from the upper end of the rear rubber pad 163 for the back cushion 61 to the front end of the lower rubber pad for the seat cushion 60 and also extends the full width of the seat and back cushions 60, 61.

The upper sponge rubber pad 104 of the seat cushion 60 is covered with a panel 126, again preferably of natural or synthetic leather, this panel extending from the front to the rear of the upper sponge rubber pad 104 for the seat cushion and terminating at the rear of this pad in an edge 128 which is secured to a beaded strip 129, this beaded strip 129 being in turn secured to one leaf or side of a folded strip 131 the hinge or fold of the latter being arranged adjacent the center of the hinge 83.

Similarly, the front sponge rubber pad 103 for the back cushion 61 is covered with a sheet 136, preferably of natural or synthetic leather, which extends substantially the full height and width of the back cushion 6G. The lower edge 138 of this back cover panel 136 is suitably secured to a beaded strip 139, this latter being secured to the other leaf or side of the folded strip 136 as best shown in Fig. 8. Along the sides of the seat and back cushions 60, 61 the rear panel 125 is joined to the upper cover panel 126 of the seat and the forward cover panel 136 of the back cushion by a side piece 140. This side piece extends completely around the edges of the seat and back cushions providing openings for the clamping bars 109 of the seat cushion" and 119 of the back cushion. These side pieces 140 are shown as connected to the cover panels 125, 126 and 136 by beaded seams 141, 142 and 143, respectively. The front and cross parts of the beads 141 and 142 of the seat cushion 60 are caught in the channels 112 of the clamping bars 109 as best shown in Fig. 8. The beaded seams 141 and 143 of the back cushion 61 are caught in the channels 122 of the clamping bars 119 as best shown in Fig. 9. It will accordingly be seen that these clamping bars 169 and 119 serve to hold the cover in position.

For convenience in carrying, a strap handle 145 is shown as having its opposite ends extending through a slit 146 in the side cover piece 140, as shown in Fig. 5, and as having its ends secured to the upper cross bar 96 as best shown in Fig. 6. To secure the hinged cushions 611, 61 to a chair or the like, strap ends 148 and 149 are suitably secured to the cover of the: back cushion 61 and one of these straps is shown as provided with a buckle 1511 to permit the strap ends 148, 149 to be passed around the back of the barber chair and buckled together.

The cable 76 is provided with a detachable connector 151 connecting with a cable 152 leading to a control box 153, a power line 154 leading to this control box and having the usual plug-in connector 155. As best shown in the wiring diagram, Fig. 10, one side of the line 154 connects with a timer 156 and the other side of the main power line 154 connects with the line 71 which is branched to connect with each of the motors 10. The other terminal of one of the motors 16 connects with the lines 74 and 72, respectively. Line 72 connects with one terminal of a rheostat 158, the other side of this rheostat connecting through a switch 159 with the terminal of the timer 156 opposite the main power line 154. The line 74 connects with one terminal of a second rheostat 160, the other terminal of which also connects through a switch 161 with the terminal of the timer 156 opposite the main power line 154. The timer 1'56, and rheostats 158 and 160 are operated by knobs 162, 163 and 164 on the control casing 153.

With the form of the invention shown in Figs. 5l0, the chushions 60, 61 are unfolded to the right angle position shown in Fig. 5. The seat cushion 66 is then placed upon the seat of a chair (not shown) such as a barbers chair. The back cushion 61 is then strapped by means of the strap ends 148, 149 and buckle 156 to the back of the chair and the plug is plugged in an electrical socket.

One or both of the switches 159, 161 are closed and the timer 156 is set to the desired length of treatment. If both switches are closed, both of the motors 10 are en ergized.

Energization of the motor 16 for the seat cushion 60 causes its eccentrically weighted shaft 12, 18 to rotate thereby gyrating the motor housing 11. This gyratory motion is transmitted through the rubber rings 20 to the split cylindrical shell 64 and from the clamping flanges 65 to the edge of the motion transmitting structure 75, comprising the lattice of metal straps 76, 78 and binge leaf 82, clamped between these clamping flanges 65. These straps gyrate in a vertical direction or transversely of a plane lengthwise of or intersecting the long and broad dimensions of the motion transmitting structure 75. This gyratory movement of the strips or straps 76, '78 is transmitted through the top sponge rubber pad 104 to the body of a person sitting on the seat cushion 60. This gyrating motion is also transmitted through the hinge leaf 82 and hinge 83 to the back cushion 61.

This back cushion 61 is also gyrated by its eccentrical 1y weighted motor 10 which gyrates its motor housing 11. Through the rubber rings 20, this motion is transmitted through the sections 95a and 95b of the cylindrical shell 95. From the clamping straps 99 and clamping flange portions 101 the gyratory action is transmitted to the vertical side edge of the motion transmitting structure 88, comprising the lattice of metal straps 9t), 91 and hinge leaf 86, welded between these clamping ears 101. These straps gyrate in a fore-and-aft horizontal direction or transversely of a plane lengthwise of or intersecting the long and broad dimensions of the motion transmitting structure 83. This gyratory movement of the strips or straps 9t), 91 is transmitted through the front sponge rubber pad 103 to the back of a person resting against the back cushion 61. This gyratory motion is also transmitted through the hinge leaf 86 and hinge S3 to the seat cushion 60.

The motion of the eccentrically weighted seat and back cushion motors 10 so transmitted through the hinge 33 results in a mixture of their frequencies and if the speeds of these motors differ there is a pronounced intermediate requency apparent in both-cushions es and of equal the difference between the motor speeds. This intermediate frequency is a slow, soothing rolling or rubbing action, which is distinct from the motor frequencies and is more pronounced when the efiective actions of the two motors are at right angles to each other as in the form of the invention shown in Figs. 5-10 where the action of the seat cushion motor is essentially vertical and the action of the back cushion motor is essentially horizontal. This intermediate frequency is also eifectively present when the action of the two motors on the motion transmitting'structure is the same, as with the form of the invention shown in Figs. 15, but the amplitude of the intermediate frequencies is less.

From the foregoing, it will be seen that with two motors not only can a greater amount of energy be applied from an enclosing shell or shells of relatively small diameter but when the motors are slightly out of phase a low speed, soothing intermediate frequency is generated, the etfect of which can be controlled by the relative disposition of the motors. It will also be seen that the invention accomplishes the various other objects and has the various advantages set forth.

I claim:

1. A therapeutic cushion which includes, a cushion part presenting a relatively thin motion transmitting core section having relatively long and broad dimensions which is relatively flexible in a direction normal to its long and broad dimensions but relatively inflexible in a direction parallel to its long and broad dimensions, said core section being formed by a series of spaced and relatively thin longitudinal extending metal bands connected by a series of spaced and relatively thin transversely extending metal hands, a pair of resilient cushioning pads formed of a highly resilient rubber-like composition bonded to the outer faces of said core section and to each other, a covering envelope snugly enclosing said resilient cushion pads and motion transmitting core section and fitted to maintain the same in compactly assembled relation; and a gyratory motor exterior to said cushion part and having a relatively stationary part and an unbalanced rotary part journaled in said stationary part with its axis extending substantially normal to the longitudinal axis of said cushion part, said rotary part having a predetermined rotary unbalance well in excess of any accidental unbalance due to inaccuracy of manufacture whereby gyratory motion is transmitted to said stationary motor part, loop means extending substantially around said stationary motor part, motor supporting means positioned between said stationary motor part and said loop means whereby gyratory motion is transmitted to said loop means, a highly resilient cushioning section enclosing said loop means and stationary motor part, a covering section embracing said cushioning section, loop means and stationary motor part, and having the terminal ends thereof extending into said cushion part, and clamp means contained within said main cushion part for clamping said loop means and covering section to the adjacent end of said core section.

2. A therapeutic cushion which includes, a cushion part presenting a relatively thin motion transmitting core section having relatively long and broad dimensions which is relatively flexible in a direction normal to its long and broad dimensions but relatively inflexible in a direction parallel to its long and broad dimensions, said core section being formed by a series of spaced and relatively thin longitudinal extending metal bands connected by a series of spaced and relatively thin transversely extending metal bands, a pair of resilient cushioning pads formed of a highly resilient rubber-like composition bonded to the outer faces of said core section and to each other, a covering envelope snugly enclosing said resilient cushion pads and motion transmitting core section and fitted to maintain the same in compactly assembled relation, and a gyratory motor exterior to said cushion part and having a relatively stationary part and an unbalanced rotary part journaled in said stationary part with its axis extending substantially normal to the longitudinal axis of said cushion part, said rotary part having a predetermined rotary unbalance well in excess of any accidental unbalance due to inaccuracy of manufacture whereby gyratory motion is transmitted to said stationary motor part, flexible metal loop means extending substantially around said stationary motor part, motor supporting means positioned between said stationary motor part and said loop means whereby gyratory motion is transmitted from said motor to said loop means, a highly resilient cushioning section enclosing said loop means and motor part, a covering section embracing said cushioning section, loop means and stationary motor part and having the terminal ends thereof extending into said cushion part, and clamp means which includes a pair of clamp plates contained within said main cushion part for clamping said loop means and covering section to the adjacent end of said core section.

3. A therapeutic cushion which includes, a cushion part presenting a relatively thin motion transmitting core section having relatively long and broad dimensions which is relatively flexible in a direction normal to its long and broad dimensions but relatively inflexible in a direction parallel to its long and broad dimensions, said core section being formed by a series of spaced and relatively thin longitudinal extending metal bands connected by a series of spaced and relatively thin transversely extending metal bands, a pair of resilient cushioning pads formed of a highly resilient rubber-like composition bonded to the outer faces of said core section and to each other, a covering envelope snugly enclosing said resilient cushion pads and motion transmitting core section and fitted to maintain the same in compactly assembled relation, and a gyratory motor exterior to said cushion part and having a relatively stationary part and an unbalanced rotary part journaled in said part with its axis extending substantially normal to the longitudinal axis of said cushion part, said rotary part having a predetermined rotary unbalance well in excess of any accidental unbalance due to inaccuracy of manufacture whereby gyratory motion is transmitted to said stationary motor part, a pair of motor cooling fans fixed to the opposite ends of said rotary motor part, apertured end closures extend ng over the outer faces of said fans, flexible metal loop means extending substantially around said stationary motor part, motor supporting means positioned between sa d stationary motor part and said loop means whereby gyratory motion is transmitted from said motor to said loop means, a highly resilient and arcuately shaped cushioning section enclosing said loop means and stationary motor part, a cover ng section embracing said cushioning section, loop means and stationary motor part, and clamp means contained within said main cushion part for clamping said loop means to the adjacent end of said core section.

4. A therapeutic massage device including in combination, a relatvely thin motion transmitting structure having relatively broad and long dimensions, said motion transmitting structure being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a resilient cushioning pad in motion transmitting contact with at least a side of said motion transmitting structure and fully covering a side of said mot on transmitting structure, a longitudinally split housing shell formed from flexible sheet material presenting a semitubular body portion and flange portions projecting laterally from the longitudinal edges thereof, detachable fastening means for securing the flange portions of said shell to one end of said motion transmitting structure, a gyratory motor contained within the tubular body portion of said shell and presenting a relatively stationary part and a rotary part journaled on said stationary part, said rotary part having a predetermined mechanical rotary unbalance of substantial amount well in excess of any accidental unbalance clue to inaccuracy of manufacture, and means for supporting the stationary part of said motor in the tubular body portion of said shell and providing the sole support between said motor and shell.

5. A therapeutic massage device including in combination, a relatively thin motion transmitting structure having relatively broad and long dimensions, said motion transmitting structure being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a resilient cushioning pad in mot'on transmitting contact with at least one side of said motion transmitting structure and covering a side of said motion transmitting structure, a longitudinally split housing shell formed from flexible sheet material presenting a semitubular body portion and flange portions projecting later ally from the longitudinal edges thereof and wherein the tubular body portion of sad shell extends substantially the full length of the adjacent edge of said motion transmitting structure, fastening means for securing the flange portions of said shell to the adjacent edge of said motion transmitting structure, and a gyratory motor contained Within and supported by the tubular body portion of said shell.

6. A therapeutic massage device including in combination, a motion transmitting structure formed by a lattice of longitudinally and transversely extending and relatively thin resilient metal bands joined in face-to-face relation with one another, said motion transmitting structure being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in the plane parallel to its broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structure and covering said motion transmitting structure, a housing shell presenting a semi-tubular body portion and flange portions projecting laterally therefrom, fastening means for securing the flange portions of said shell to one end of said motion transmitting structure, and a gyratory motor supported within the tubular body portion of said shell.

7. A therapeutic massage device including in combination, a relatively thin motion transmitting structure having relatively broad and long dimensions, a par of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structure, a longitudinally split housing shell presenting a semi-tubular body portion and flange portions projecting laterally from the longitudinal edges thereof, means for securing the flange portions of said shell to one end of said motion transmitting structure, a gyratory motor assembly con tained Within and supported by the tubular body portion of said shell, said motor assembly including a gyratory motor having a relatively stationary part and a rotary part whose shaft is rotatably supported by its stationary part, and an air circulation fan fixed to the projecting end of said motor shaft for driving a stream of motor cooling air through the tubular body portion of said shell, and an end closure for each end of said housing shell,

each of said end closures presenting a perforated end wall portion for the circulation of motor cooling air and a tubular flange portion telescoping into the tubular body portion of said housing shell.

8. A therapeutic massage device including in combination, a relatively thin motion transmitting structure having relatively broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structure and covering said motion transmitting structure, a longitudinally split housing shell formed from flexible sheet material presenting a semi-tubular body portion and flange portions projecting laterally from the longitudinal edges thereof, detachable fastening means for securing the flange portions of said shell to one end of said motion transmitting structure, an arcuate shaped cushioning pad embracing the tubular body portion of said housing shell, a covering envelope snugly embracing and containing the paired cushioning pads and the vibration transmitting structure sandwiched therebetween, an arcuate covering enclosing and embracing said arcuate cushioning pad and the housing shell contained therein, and a gyratory motor contained within and supported by the tubular body portion of said shell.

9. A therapeutic massage device including in combination, a relatively thin motion transmitting structure having relatively broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structure and covering said motion transmitting structure, a longitudinally split housing shell formed from flexible sheet material presenting a semi-tubular body portion and flange portions projecting laterally from the longitudinal edges thereof, detachable fastening means for securing the flange portions of said shell to one end of said motion transmitting structure, a gyratory motor contained within and supported by the tubular body portion of said housing shell, a covering envelope snugly embracing and containing the paired cushioning pads and the vibration transmitting structure sandwiched therebetween, said covering envelope presenting a pair of side panels and a bead formation at the upper end of each of said side panels, and a pair of metal strips associated with said housing shell, each of said metal strips presenting a rolled edge portion designed to releasably grip the adjacent bead formation of said covering envelope and thereby maintain the covering envelope in snugly fitted position.

10. A therapeutic massage device including in combination, a relatively thin motion transmitting structure having relatively broad and long dimensions, said motion transmitting structure being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structure and covering said motion transmitting structure, a covering envelope snugly embracing and containing the paired cushioning pads and the vibration transmitting structure sandwiched therebetween, a pair of gyratory motors each presenting a rotary part and a stationary part, means for connecting the stationary part of one of said motors to one edge of said motion transmitting structure, and means for connecting the stationary part of the other gyratory motor to another edge of said motion transmitting structure and with the axis of its rotary part arranged in substantially perpendicular relation to the axis of the rotary part of the said first named motor.

11. A therapeutic massage device including in combination, a pair of relatively thin motion transmitting structures each relatively flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a hinge uniting adacent edges of said motion transmitting structures, resilient cushioning pads in motion transmitting contact with the opposite sides of both of said motion transmitting structures and covering said motion transmitting structures, a covering snugly embracing and containing said cushioning pads and the vibration transmitting structures sandwiched therebetween, a gyratory motor having a rotary part and a stationary part, and means for securing the stationary part of said motor to a free edge of one of said motion transmitting structures.

12. A therapeutic massage device including in combination, a pair of motion transmitting structures each formed by a lattice of relatively thin flexible bands joined in a face-to-face relation with each other, a hinge uniting adjacent edges of said motion transmitting structures, resilient cushioning pads in motion transmitting contact with the opposite sides of both of said motion transmitting structures and covering said motion transmitting structures, a covering snugly embracing and containing said cushioning pads and the vibration transmitting structures sandwiched therebetween, a gyratory motor having a rotary part and a stationary part, and loop means for securing the stationary part of said motor to the opposite edge of one of said motion transmitting structures with the axis of said motor extending substantially perpendicular to the axis of said hinge.

1-3. A therapeutic massage device including in combination, a pair of motion transmitting structures each relatively flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a hinge uniting adjacent edges of said motion transmitting structures, resilient cushioning pads in motion transmitting contact with the opposite sides of both of said motion transmitting structures and covering said motion transmitting structures, a covering snugly embracing and containing said cushioning pads and the vibration transmitting structures sandwiched therebetween, a gyratory motor having a rotary part and a stationary part, means for securing the stationary part of said motor to a free edge of one of said motion transmitting structures with the axis of said other motor extending substantially parallel to the axis of said hinge.

14. A therapeutic massage pad including in combination, a relatively thin motion transmitting structure having relatively broad and long dimensions, said motion transmitting sructure being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a resilient cushioning pad in motion transmitting contact with at least a side of said motion transmitting structure and fully covering a side of said motion transmitting sructure, a longitudinal housing shell formed from flexible sheet material presenting a semi-tubular body portion and flange portions projecting laterally from the longitudinal edges thereof, fastening means for securing the flange portions of said shell to one end of said motion transmitting structure, a gyratory motor supported within the tubular body portion of said shell and presenting a relatively stationary part and a rotary part journaled on said stationary part, said rotary part having predetermined mechanical rotary unbalance of substantial amount well in excess of any accidental unbalance due to inaccuracy of manufacture, and strap means for securing the massage pad to a chair.

157 A therapeutic massage device including in combination, a relatively thin motion transmitting structure having relatively broad and long dimensions, said motion transmitting structure being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a pair of resilient cushioning pads in motion transmittin contact with the opposite sides of said motion transmitting structure and covering said motion transmitting structure, a covering envelope snugly embracing and containing the paired cushioning pads and the vibration transmitting structure sandwiched therebetween, a pair of gyratory motors each presenting a rotary part and a stationary part, and means for connecting the stationary part of said motors to one end of said motion transmitting structure with the axis of said motors arranged in substantially coaxial relation.

16. A therapeutic massage device including in combination, a pair of relatively thin motion transmitting structures having relatively broad and long dimensions, each of said motion transmitting structures being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structures and embracing said motion transmitting structures, a covering envelope snugly embracing and containing the paired cushioning pads and the vibration transmitting structures sandwiched therebetween, a pair of gyratory motors each presenting a rotary part and a stationary part, and means for conmeeting the stationary parts of said gyratory motors to adjacent ends of the respective motion transmitting structures with the axis of said motors arranged in substantially coaxial relation.

17. A therapeutic massage device including in combination, a motion transmitting structure formed by a lattice of relatively thin resilient bands joined in face-toface relation with one another, said motion transmitting structure being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structure and covering said motion transmitting structure, a covering envelope snugly embracing and containing the paired cushioning pads and the vibration transmitting structure sandwiched therebetween, a pair of gyratory motors each presenting a rotary part and a stationary part, and means for connecting the stationary part of said motors to one end of said motion transmitting structure with the axis of said motors arranged in substantially coaxial relation.

18. A therapeutic massage device including in combination, a pair of motion transmitting structures each formed by a lattice of relatively thin resilient bands joined in face-to-face relation with each other, each of said motion transmitting structures being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structures and embracing said motion transmitting structures, a covering envelope snugly embracing and containing the pair cushioning pads and the vibration transmitting structures sandwiched therebetween, a pair of gyratory motors each presenting a rotary part and a stationary part, and means for connecting the stationary parts of said gyratory motors to adjacent ends of the respective motion transmitting structures with the axis of said motors arranged in substantially coaxial relation.

19. A pad of substantially mattress size including in combination, a pair of motion transmitting structures each including a lattice of relatively thin and longitudinally and transversely extending flexible metal bands joined in face-to-face relation with each other, each motion transmitting structure being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel, to its broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact with the opposite sides of said motion transmitting structure and covering said motion transmitting structure, a covering envelope snugly embracing and containmg the paired cushioning pads and the vibration transmitting structure sandwiched therebetween, a pair of 17 gyratory motors each presenting a rotary part and a stationary part, a housing containing and supporting said motors, and means for connecting the housing to adjacent edges of said motion transmitting structures with the axis of said motors arranged in substantially coaxial relation.

20. A therapeutic massage device of substantially mattress size including in combination, a pair of relatively thin motion transmitting structures each relatively flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, resilient cushioning pads in motion transmitting contact with the opposite sides of both of said motion transmitting structures and covering said motion transmitting structures, a covering snugly embracing and containing said cushioning pads and the vibration transmitting structures sandwiched therebetween, a pair of variable speed gyratory motors each having a rotary part and a stationary part, means for securing the stationary part of said gyratory motors to adjacent edges of said motion transmitting structures, and means for separately controlling the rotative speed of said gyratory motors.

21. A therapeutic massage device of substantially mattress size including in combination, a pair of motion transmitting structures each comprising a lattice of relatively thin longitudinally and transversely extending flexible metal bands joined in face-to-face relation with each other, each of said motion transmitting structures being flexible in a direction transversely of its broad and long dimensions but relatively inflexible in a plane parallel to its broad and long dimensions, a pair of resilient cushioning pads in motion transmitting contact With the opposite sides of said motion transmitting structures and covering said motion transmitting structures, a covering envelope snugly embracing and containing the paired cushioning pads and the vibration transmitting structures sandwiched therebetween, a pair of variable speed gyratory motors each presenting a rotary part and a stationary part, means for connecting the stationary part of said gyratory motors to adjacent edges of said motion transmitting structures with the axis of said gyratory motors arranged in substantially coaxial relation, and means for separately controlling the rotative speed of said gyratory motors.

22. A therapeutic cushion which includes, a cushion part presenting a relatively thin motion transmitting core section having relatively long and broad dimensions which is relatively flexible in a direction normal to its long and broad dimensions but relatively inflexible in a direction parallel to its long and broad dimensions, said core section being formed by a series of spaced and relatively thin longitudinal extending metal bands connected by a series of spaced and relatively thin transversely extending metal hands, a pair of resilient cushioning pads formed of a highly resilient rubber-like composition bonded to the outer faces of said core section and to each other, a covering envelope snugly enclosing said resilient cushion pads and motion transmitting core section and fitted to maintain the same in compactly assembled relation, and a gyratory motor, exterior to said cushion part and having a relatively stationary part and an unbalanced rotary part journaled in said part with its axis extending substantially normal to the longitudinal axis of said cushion part, said rotary part having a predetermined rotary unbalanced Well in excess of any accidental unbalance due to inaccuracy of manufacture whereby gyratory motion is transmitted to said stationary motor part,

flexible metal loop means including a flexible loop section extending substantially around said stationary motor part, and paired flange portions extending from said loop section and secured to the adjacent end of said core section, motor supporting means positioned between said stationary motor part and said loop section whereby gyratory motion is transmitted from said motor to said loop means, a highly resilient and arcuately shaped cushioning section enclosing said loop means and stationary motor part, a covering section embracing said cushioning section, loop means and stationary motor part, means securing the upper ends of said covering envelope to said covering section, and clamp means contained Within said main cushion part for clamping said loop means to the adjacent end of said core section.

References Cited in the file of this patent UNITED STATES PATENTS 2,425,655 Tompkins Aug. 12, 1947 2,448,l62 Wettlaufer Aug. 31, 1948 2,715,901 Blake Aug. 23, 1955 

